<template>
  <el-upload
    class="avatar-uploader"
    action="#"
    :show-file-list="false"
    :before-upload="beforeAvatarUpload"
    :http-request="upload"
  >
    <img v-if="imageUrl" :src="imageUrl" class="avatar">
    <i v-else class="el-icon-plus avatar-uploader-icon" />
    <!-- 进度条 -->
    <el-progress v-if="showProgress" :percentage="percent" />
  </el-upload>
</template>

<script>
const COS = require('cos-js-sdk-v5')
const cos = new COS({
  SecretId: 'AKID9B2f6JJ6eyMbGh2IMBpEVZxAE98tUKzT',
  SecretKey: 'NaeYFj297xDGWbaOxsbB3lSQFqDTaei5'
})

export default {
  props: {
    value: {
      type: String,
      default: ''
    }
  },
  data() {
    return {
      imageUrl: '',
      showProgress: false,
      percent: 0
    }
  },
  methods: {
    upload(res) {
      console.log(res)
      // 获取文件对象之后, 可以调用腾讯云提供的接口 上传到腾讯云
      if (res.file) {
        this.showProgress = true
        cos.putObject({
          Bucket: 'hr88-1257017897', /* 填入您自己的存储桶，必须字段 */
          Region: 'ap-naning', /* 存储桶所在地域，例如ap-beijing，必须字段 */
          Key: 'res.file.name', /* 存储在桶里的对象键（例如1.jpg，a/b/test.txt），必须字段 */
          Body: res.file, /* 必须，上传文件对象，可以是input[type="file"]标签选择本地文件后得到的file对象 */
          onProgress: function(progressData) {
            console.log(JSON.stringify(progressData))
          }
        }, (err, data) => {
          this.showProgress = false
          console.log(err || data)
          // 判断是否上传成功, 上传成功保存在变量中
          if (data.statusCode === 200) {
          // this.imageUrl = `http://${data.Location}`
            this.$emit('input', `http://${data.Location}`)
          }
        })
      }
    },
    beforeAvatarUpload(file) {
      const isJPG = file.type === 'image/jpeg'
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG 格式!')
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 2MB!')
      }
      return isJPG && isLt2M
    }
  }
}
</script>

<style>
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
</style>
